Ruling · Vasantotsava · 2038

Sunday 21 March

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 527 minutes.

Decide it for

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two sunrises

One ghaṭī is 24 minutes. The sunrise is read as upper limb, 31′ + 16′.

Sunrise of Saturday 20 March

Pratipadā does not hold at sunrise. Not taken.

06:32 sunrise
05:2005:4406:0806:3206:5607:2007:44

Absent at sunrise

Sunrise of Sunday 21 March

Taken. The only sunrise Pratipadā holds at.

06:31 sunrise
05:1905:4306:0706:3106:5507:1907:43

Holds at sunrise

Pratipadā presentSunrise, the instant the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 19:10 on Sat 20 Mar to 15:17 on Sun 21 Mar.

    2038-03-21T02:09:38Z → 2038-03-21T22:17:12Z

  2. 02

    Kāla

    Sunrise is at 06:32 on the 20th and 06:31 on the 21st.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 20th and is on the 21st.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Only one sunrise qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 31597 s

  5. 05

    Ruling

    Vasantotsava, Phoenix, 2038: Sunday 21 March.

    confidence: determinate

Say it like this

In Phoenix, Vasantotsava 2038 falls on Sunday 21 March. Pratipadā runs from 19:10 on Sat 20 Mar to 15:17 on Sun 21 Mar and is current at sunrise that day.

ahargana.org/phoenix/festivals/2038/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 21 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 21 Mar
compat-drikpanchangComparison profileSun 21 Mar
No institution has a recorded ruling for Phoenix.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/vasantotsava · ruleset 2026.3-draft

Month
Phālguna, amānta
Pakṣa · aṅga
Kṛṣṇa · Pratipadā
Kāla
Sunrise
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāSunrise 21stCoveredSunrise 22ndCoveredRuled
Los Angeles19:10 → 15:1706:55holds06:54no21 Mar
Chicago21:10 → 17:1706:52holds06:50no21 Mar
Jersey City22:10 → 18:1706:58holds06:56no21 Mar
Port of Spain22:10 → 18:1706:10holds06:09no21 Mar
London02:10 → 22:1706:01holds05:59no21 Mar
Durban04:10 → 00:1706:00holds06:01no21 Mar
Dubai06:10 → 02:1706:22holds06:21no21 Mar
Delhi07:40 → 03:4706:24no06:23no21 Mar
Kolkata07:40 → 03:4705:40no05:39no21 Mar
Singapore10:10 → 06:1707:09no07:08no21 Mar
Sydney13:10 → 09:1706:59no07:00holds22 Mar
Suva14:10 → 10:1706:10no06:11holds22 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vasantotsava@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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